Road machine



" Dems, 1932. W J.B,JARM|N 1,890,649

ROAD MACHINE Filed May 8, 1950 5 Sheets-Sheet 1 jane/ Jam/72 /2//4 Il, dm

J. B. JARMIN v vROAD MACHINE Filed May 8, 193C 5 sheets-sheet 2 A J. B. JARMIN Dec. 13, 1932.

ROAD MACHINE 5 Sheets-Sheet I5 Filed May 8, 195C WMI Wm,

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Dec. 13,l 1932. J. B; JARMIN 1,890,649

ROAD MACHINE Filed May 8, 195C 5 Sheets-Sheet 4 at a 1 m'-' w 3 Q Q Q hij 3% n 01 Eff S14/wanton Jamef .Jar/m22 Dec. 13, 1932.

.1.B. JARMIN 1,890,649

ROAD MACHINE Filed May 8, 1950 5 sheets-sheet 5 m l 1 rfi-L '.@FJI w l K u M. N R

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O Of o`\ bility and more 40 lar member thus doing awaywith v Patented Dec. 13,1932.

UNITED STATES .PA-TENT OFFICE .Turns B'. ummm, on DALLAS, TEXAS, AssIGNon To sEnvrs or DALLAS, TnxAs, A CORPORATION or EQUIPMENT COMPANY, TEXAS ROAD MACHINE Application led May 8, 1930. Serial No. 450,715.

This invention relates to new and useful improvements in road working machines; The invention has particularly to do with motor driven machines. in which the motor is built in as a, part-ofthel machine. It hasbeen A cated between the twoA side members and hangs below the same. Also the blade `is suspended and subjects the frame to twisting One :object of the invention is to provide a machine wherein a single tubular member or pipe is employed .as a central overhead support and substitute for th4 usual frame,

whereby a more rigid and su stantial structure is. roduced.

A urther object of the invention is to rigidly attach the tubular support'directly to the motor structure thus producing an integral e'iiect whereby the resistance to twisting offered b the tubular member, is greater than the combined-weight and strain to which ',30 it is subjected.

' Another object`V of the invention is 'to directly connect the rear end of the tubular support to the differential gear housing and rear axle, while the4 frontend of the support is carried by a pony truck thus making for sta-J positivelyholding the blade to the work. i 4 A further object of the invention is to piovide a central support in the form of a tubuside framev members from this interference,^ thus making it moreJ accessible to the operator and also reducing to a minimum all obstructions in his forward line of vision thereby enabling him to more readily observe the blade and work and to see a larger portion than where his View is ob*- structed by the usual frame. l

A construction designed to carryl out the 5D invention will be hereinafter described to,

the usual `and freeing the motor I In carrying out the gether with otherfeaturesof the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings in which an example of the invention is shown, and wherein:

-Figure l is a side elevation of the machine, lconstructed in accordance with the invention,

Figure 2 is a plan view lof the same, Figure 3 is a rearelevation of the machine,-

Figure 4 is a detail of the adjusting means,

ff Figure is a transverse vertical sectional view taken on the line 5-5 of Figure 2,

Y' Figure 6 is a longitudinal vertical sectional view taken on the line 6 6 of Figure 5, Y Figure 7 is a horizontal cross sectional view taken on the line 7'-7 of Figure 6,

, Figure, 8' is a transverse vertical sectional view taken on the line 8-8 of Figure 1,

line 9 -9 of Figure 1, v f Figure 10s\an enlarged transverse vertical sectional view taken on the line 10-10 of.l

Figure 1, f t

igure 11 is a detail of the vblade support, an

Figure 12 is a vertical sectionalview taken on line 12-12of Figure 6. In the drawings the numeral 10 designatesv a main connezting member or reach which connectsthe front` and rear axles and consti# tutesthe sole connecting member and backbone of the machine. It is the essence of the invention to form this ing tubular or hollow so as to give strength Y and rigidity. It is preferable to use for this reach a length of pipe of comparatively large diameter, although an. eye beam or channel structure may beJ used for the same pur ose.

As an illustration, it has been found t at a 1,2 inch pipe 16 feet long will safely-carry a Figure 9 is a sectional view taken on the.

reach as a single cen tral member extending lmgitudinally and beload of 54,000 pounds and the twistlng.

strength of this sizeof pipe is ap roximately 84,000 pounds on an average o 10 feet in length. A lmachine constructed with this size of l pipe would weigh less ,than 10,000 pounds, and therefore, the reach has an ample load \carrying and torsion resisting. capacity. idea of simplicity; and

. is mounted in ground wheels 18. An operators seat 109 has a spring mounting to the rear of the elbow 13. Y

An 4engine 104 is suspended from the reach Lby a stirrup 105 'which is clamped to said reach by U-bolts 106. A fuel supply/tank 107 is mounted within the reach and yhas a suitable fuel conductor 108 for supplying fuel to the engine. This `mounting of the-engine provides for accessibility to all parts thereof, thus making for convenience in the repairing and servicing of the engine. It'is not considered necessaryto go into details of construction which are in common use'and are now being manufactured for the trade.

.As shown in-Figs. 1, 5 and '6, the reach is curved at its center downwardly and forwardly and is carried at its forward end by a post 19 having a saddle 20 at itsupper end and a circular plate 21 at its lower end. The forwhereby said reach is held against circumfer` ward end of the -,reach is clamped in the saddle by U-bolts 22 and' nuts 23. The saddle kgis provided with a lug 24 (Figure 12) engaging in an vaperture 25 at the bottom vof the reach ential movement when clamped in position.

A king-pin 26 having a yoke 27 at oneend and a circular boss 28 adjacent the yoke', extends through an-opening 29 in the circular plate 21 with the boss engaging the plate,

whereby a turntable is formed. The upperY end of the pin seats in a boss 30 depending from the bottom of the saddle, whereby the pin is rigidly held in place. A bell shaped clevis 31 is mounted on the pin and held in positionby an adjustable collar 32 secured to `said pin.

The yoke 27 straddles an axle bar 33 and is pivotally connected to the center of the.

bar by a pin .34. The bar has axles 35 pivotally mounted in ground wheels 36. A V-shaped brace rod 37 has its ends secured to the axle bar adjacent the axle mounting and has a pivotal connection to the lower end of a support bar 38 depending from the forward end of the reach to which'said bar is secured.

, The bar 38 has a brace 39 extending rearwardlv therefrom with'its rear end mounted over theking-pin. By provision of the pivotal mounting of the pin 26 to the axle bar and Ithe pivotal connection between the brace rodl 37 and the support bar 38 the reach is provided with a single point of support at its front end.

As shown in Figs. 5, 6 and 7 the axles are connected at its ends with the `axles-v each provided with the usual steering arms 40 ,connected attheir outer ends by atie rod 41. One of the steeringrarms has a bracket 42 extending therefromand having a pivotal connection with one end ofa drag link 43. The opposite end of the link has a pivotal connection to the en'd of a crank arm 44 mounted on a shaft 45. The shaft in turn yis mounted in a gear housing 46. and carries a gear 47 within said housing. The housing 46 is made integral with a worm screw housing 48 which is secured to thereach and has mounted therein on one end of a shaft'49 a worm screw 50.

The worm screw is meshed with the gear 47 so that when the shaft 49 is rotated, the Crank 44'is swung in an arc and thereby position the axles 35 and wheels 36. The shaft 49 extends parallelyand longitudinal of the reach to the rear thereof and has a universal coupling 50 therein, opposite the curved central portion of the reach. A bracket 51 is mounted over the shaft 49 opposite the couporting said shaft. f

The rear end of the shaft is journaled in a bearing bracket 52 mounted on a transverse shaft 53 .which isl 'supported'at 4its end in clamps .54 of la transverse bracket 55. v The bracket 55 is secured to a boss 56protruding from the rear of the elbow 13. For rotating the shaft 49 a gear'57 is secured thereto at itsrear end and has a chain 58 connecting it with a gear 59 on a shaft 60. This shaft has one end journaled in a bearing boss 61 of the elbow and its other end supported in a bearing bracket 62, the lower end of which is secured to the boss 56.v A hand wheel 63 is mounted on the outer end of the shaft for rotating the same whereby the shaft 49 wil'l be rotated to position the axles 35 and wheels 36 as desired. i

A 'longitudinal sub-frame 64 underlies the reach 10 and has its forward end rigidly attached to the clevis 31. This frame by reason of the pivotal mounting of said clevis may be raised andl lowered at itsl rear end or swung' in a transverse arc on its longitudinal axis. The frame is composed of side angle members 65 extending rearwardly from the clevis and diverging outwardly from each other at their rear ends. A cross angle bar 66 connects the rear-ends of the members 65.

For supporting the rear end of the sublframeI 64, an adiustable hanger is fastened on the reach. This hanger includes a pair of laterally extending hanger brackets 67 which are in the lform of castings having semiscircular clamp collars 68 at their. inner ends. The clampl collars engage on eachside of the reach and are connected b'y top and bottom bolts'40. `As is shown in Fig. 410, each collar has a lug 69 engaging in apertures K` 70 in the reach, whereby the brackets are supend to one end of a drag link site end of each link 79 has a nection 80 to the rearend of one of the angle ported against said reach. A

A shaft 71 circumferential movement on gear 75 is mounted on each end of th shaft adjacent each of the brackets 67 and has Asecured thereto ya sleeve 76. The outer end of each sleeve is provided with a crank arm 77 which has\a universal couplin 78 at its'outer %9. The oppomembers 65.` It will be seenthat the lframe 64 is freely hung for vertical adjustment both longitudinally and transversely and also for tilting or rotative adjustment on its longitudinal axis. Y

For`I adjusting the crank arm 77, the lsegmental gears 75 are driven by worm screws 81 journaled in the brackets 67, best shown in Figs. mounted on the front ends ofadjusting shafts 82 which extend rearwardly on each side of the reach and have their rear ends journaled in bearing supports 83 adj ustably mounted on arms 84 of the bracket 55, best shown in Figs. 1 and 3. Eachlshaft has a beveledgean 85- on its rear end driven by a beveled gear 86 formed on the hub of a hand Wheel 87 which is loosely journaled on one end of the shaft 53. By revolving the hand wheels theworm screws 81 associated therewith are rotated and the segmental gears 75 are swung, where`- by the crank arms 77 are actuated andthe frame 64 is either raised or lowered. f

It is pointed out that the entire hanger assembly-is clamped upon the reach member by the bolts thus making simplicity in assembling the machine. l v

' A blade ring 88 is suspended from the subframe 64 and is supported at its central portion by a transverse 'hanger bar 89secured to the angle lnember and engaging under a lip 90 of the ring as best shown in Figs. 2 and 9. For securing the blade ring against any loose movementon the hanger bar 89, dogs 91 slidable upon the hanger bar are positioned against the inner edge of the lip 90 at opposite sides ofthe ring by adjusting bolts 92 mounted in angle vbrackets `93 which are secured on said hanger bar.

The forward end of the ring 88 is supported on a transverse bracket 94, (Fig. .8) engaging under the lip- 90 and secured to a transverse bar 95 mounted between the angle members 65, A spring pressed plunger pin u 96 carried by a bracket 97 v mounted on the bar 95 engages in teeth 98 formed in the lip 90 of the ring, whereby the ring is held against rotation. To release the ringa wedge 99 mounted on top of the bracket 97 and under alhead- 96|k of the pin 96 so that by universal' con- 1 and 10. vThe Worm screws are pivote'd at one side to said bracket engags sl1 ing the wedgeunderneath the head 96 the 4pm is raised from engagement w'ith the teeth 98.' For slidably operating the wedge 99 a rod 100 has one end secured to the wedge and extends to the rear of the machine, as shown in Fig. 1.-

Standards 101 are secured to opposite sides l ofthe ring 88fo`r suspending a blade 102 whc'h is adjustably secured. to the lower ends Lof said standards whereby'the blade may be adjusted at any desired pitch. As bestprovided shown in Figs. 1 and 11 the blade is with a replaceable cutting edge 103.

For rotating thel ring88 to swing the blade 102 to a desired angle the sub-frame 64'isti1ted so that one end'of the blade will engage in the ground, then by raising the plunger pin 96'and moving the machine either forward or backward, the ring 88 will -be rotated on the hanger bar.89 and the transverse bracket 94.

In this manner the position of the blade may be adjusted Without the voperator leaving his seat. By reason ofthe single central pipe-member 10 andthe freedom from sup# ports on each side thereof, the vision of the operator is unobstructed andl he may look along .ea`ch side of said pipe member and clearly see the blade, the road and the steering gear atthe front wheels.

4-It will be remembered 'that the invention has only been described as a road machine because ofthe application of a -road scraper blade tosaid machine. But, it is to be understood that the invention is not to be limited to the sole use of the road scraper blade-.as farm implements such as harrows, plows, cultivators and the like may be applied to the machine for-use as desired. l Various changes in the size and shape of the-different parts, as well .as modifications and alterations, may be made Iwithin the scope of the appended claims.

What I claim, is:

1. In a road machine, longitudinal reach having tion inclined downwardly and its rear portion disposed horizontally, a low front wheel assembly, an upright supportmountedl in the front wheel assembly and secured to the inclined end of the reach, a tractor having its entire forwardportion suspendedljrom the horizontal portion ofthe reach, and a rigidconnection between the rear end of the reach and the tractor, the single reach and its forward inclined 'portion providing an 'unlobstructed view from the tractor.

2. In a road machine,

a single central its forward pora single AcentralL longitudinal reach having its forward por-4 rear por' Alll) inclined end ofthe reach, a tractor having the major portion of its length suspended from the horizontal portion of the reach, and a rigid connection between the rear end of the reach and the dierential housing. of the tractor, the single reach and its forward inclined portion providing an unobstructed view from the tractor.

3. In a road machine, a front axle having steering wheels, a rear transverse axle including a differential housing, a central tubular member c nnectingthe front and rear axles and constituting the sole connection therep betw-een, the rear portion of said tubular member beng elevated a substantialdistance above the rear axle, a tractor engine underlying tlie elevated rear portion of the tubular member immediately in front ot' the diiferential housing with which it is connected, and means for suspending the engine under the rear portion of the tubularmember, the entire engine being located between the front and rear axles and below the tubular member, whereby the driver has an unobstructed vision along each side of the tubular member and above the engine.

4. In a road machine, a front axle having steering Wheels, a rear transverse axle including a differential housing, a central longitudinal pipe member connected with the front axle and elevated above the rear axle', an

elbow having its upper end secured tothe rear end of the pipe member and its lower end fastened to the differential housing, a tractor engine underlying the rear portion of the pipe member and the upper portion of the elbow directly in front of the diferential housing with which it is connected, and

means for suspending the engine from the pipe member.

In testimony whereof I aix my signature.

JAMES B. JARMIN. 

